<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
             <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区 -->
        <el-card class="box-card">
        <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="9">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable
                    @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList">

                        </el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">
                        添加用户
                    </el-button>
                </el-col>
            </el-row>
        <!-- 用户列表区 -->
        <el-table :data="userList" border="" stripe="">
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态" >
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                   </el-switch>
                </template></el-table-column>
                
            <el-table-column label="操作">
                <template  slot-scope="scope">
                <!-- 修改按钮 -->
                    <el-button type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>
                <!-- 分配角色按钮 -->
                    <el-button type="warning" icon="el-icon-setting" @click="setRole(scope.row)"></el-button>              
                <!-- 删除按钮 -->
                    <el-button type="danger" icon="el-icon-delete" @click="removeUserById(scope.row.id)"></el-button>
                </template>
            </el-table-column> 
        
        </el-table>
            <el-pagination
                 @size-change="handleSizeChange"
                 @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                 layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
            <!-- 添加用户对话框 -->
            <el-dialog
                title="添加用户"
                :visible.sync="addDialogVisible"
                width="50%" @close="addDialogClosed">
                <!-- 主体内容区域 -->
                    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" 
                    label-width="70px">
                        <el-form-item label="用户名" prop="username">
                            <el-input v-model="addForm.username"></el-input>
                        </el-form-item>
                        <el-form-item label="密码" prop="password">
                            <el-input v-model="addForm.password"></el-input>
                        </el-form-item>
                        <el-form-item label="邮箱" prop="email">
                            <el-input v-model="addForm.email"></el-input>
                        </el-form-item>
                        <el-form-item label="手机" prop="mobile">
                            <el-input v-model="addForm.mobile"></el-input>
                        </el-form-item>
                    </el-form>
                    <!-- 底部区域 -->
                <span slot="footer" class="dialog-footer">
                    <el-button @click="addDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="addUser">确 定</el-button>
                </span>
            </el-dialog>
            <!-- 修改用户对话框 -->
            <el-dialog
                title="修改用户"
                :visible.sync="editDiialogVisible"
                width="50%" @close="editDialogClosed">
                <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                    <el-form-item label="用户名">
                        <el-input v-model="editForm.username" disabled></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email" >
                        <el-input v-model="editForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机号" prop="mobile">
                        <el-input v-model="editForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <span slot="footer" class="dialog-footer">
                <el-button @click="editDiialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
</el-dialog>
            <!-- 分配角色的对话框 -->
            <el-dialog
  title="分配角色"
  :visible.sync="setRoleDialogVisible"
  width="50%" @close='setRoleDialogClosed'>
  <div>
      <p>当前的用户：{{userinfo.username}}</p>
      <p>当前的角色：{{userinfo.role_name}}</p>
      <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
            v-for="item in rolesList"
            :key="item.id"
            :label="item.roleName"
            :value="item.id">
            </el-option>
        </el-select>
      </p>
  </div>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
</el-dialog>
        </el-card>
    </div>
</template>

<script>
export default {
    data(){
        //验证邮箱规则
        var checkEmail = (rule,value,cb)=>{
            //验证邮箱正则表达式
            const regEmail=/^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

            if(regEmail.test(value)){
                //合法邮箱
                return cb()
            }

            cb(new Error('请输入合法邮箱')) 
        }

        //验证手机号的规则
        var checkMobile = (rule,value,cb)=>{
            const checkMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

            if(checkMobile.test(value)){
                return cb()
            }

            cb(new Error('请输入合法手机号'))
        }

        return{
            //获取用户列表的参数对象
            queryInfo:{
                query:'',
                //当前的页数
                pagenum:1,
                //当前每页显示多少数据
                pagesize:2
            },
            userList:[],
            total:0,
            addDialogVisible:false,
            //添加用户的表单数据
        addForm:{
            username:'',
            password:'',
            email:'',
            mobile:''
        },
        //添加表单的验证对象规则
        addFormRules:{
            username:[
                { required :true,message:'请输入用户名',trigger:'blur'},
                { min:3,max:10, message: '用户名长度在3——10个字符之间', trigger: 'blur'}
            ],
            password:[
                { required :true,message:'请输入密码',trigger:'blur'},
                { min :6 , max: 15,  message: '用户名长度在6——15个字符之间', trigger: 'blur'}
            ],
            email:[
                { required :true , message :'请输入邮箱' , trigger : 'blur'},{validator:checkEmail,trigger : 'blur'}
            ],
            mobile:[
                { required :true , message :'请输入手机' , trigger : 'blur'},{validator:checkMobile,trigger : 'blur'}
            ]
            },
        //控制修改用户对话框的显示与隐藏
        editDiialogVisible:false,
        //查询到的用户信息对象
        editForm:{
    },
        //修改表单的验证规则对象
        editFormRules:{    
            email:[
                { required :true , message :'请输入邮箱' , trigger : 'blur'},{validator:checkEmail,trigger : 'blur'}
            ],
            mobile:[
                { required :true , message :'请输入手机' , trigger : 'blur'},{validator:checkMobile,trigger : 'blur'}
            ]
         },
        //  控制分配角色对话框的显示与隐藏
        setRoleDialogVisible:false,
        // 需要被分配角色的用户信息
        userinfo:{},
        // 所有角色的数据列表
        rolesList:[],
        // 已选中的角色id值
        selectedRoleId:[]
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
           const {data:res} = await this.$http.get('users',{ params: this.queryInfo })
           if(res.meta.status!==200) {
               return this.$message.console.error('获取用户列表失败！')
               }
           this.userList = res.data.users
           this.total = res.data.total
           console.log(res)
        },
        //监听pagesize改变的事件
        handleSizeChange(newSize){
            console.log(newSize)
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        //监听页码值 改变的事件
        handleCurrentChange(newPage){
            console.log(newPage)
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        //监听 switch 开关状态的改变
         async userStateChanged(userinfo){
                console.log(userinfo)
                const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
                if(res.meta.status!== 200){
                    userinfo.mg_state = !userinfo.mg_state
                    return this.$message.error('更新用户状态失败！')
                }
                this.$message.success('更新用户状态成功')
        },
        //监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮添加新用户
        addUser(){
            this.$refs.addFormRef.validate( async valid=>{
                if(!valid) return
                //可以发起添加用户的网络请求
              const {data:res} = await this.$http.post('users',this.addForm)

              if(res.meta.status!== 201){
                  this.$message.error('用户添加失败')
              }
              this.$message.success('用户添加成功')
              //隐藏添加用户的对话框
              this.addDialogVisible=false
              //重新获取用户列表数据
              this.getUserList()
            })
        },
        //展示编辑用户的对话框
        async showEditDialog(id){
           // console.log(id)
            const {data:res} = await this.$http.get('users/'+id)
            if(res.meta.status!==200){
                return this.$message.error('查询用户信息失败')
            }

            this.editForm = res.data
            this.editDiialogVisible = true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate( async valid => {
                if(!valid) return
                //发起修改用户数据请求
                const{data:res} = await this.$http.put('users/'+this.editForm.id,{
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                })

                if(res.meta.status!==200){
                    return this.$message.error('用户信息更新失败')
                }

                //关闭对话框
                this.editDiialogVisible = false
                //刷新数据列表
                this.getUserList()
                //提示修改成功
                this.$message.success("更新用户信息成功!")
            })
        },
        //根据ID删除对应的用户信息
        async removeUserById(id){
            //弹框询问是否删除数据
            const confirmResult = await this.$confirm(
                '此操作将永久删除该用户, 是否继续?', 
                '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
        }).catch(err=>err)
        //如果用户确认删除，则返回值伟字符串confirm
        //如果用户取消了删除，则返回值伟cancel
        if(confirmResult!=='confirm'){
            return this.$message.info('用户取消删除')
        }
        const {data:res} = await this.$http.delete('users/'+id)
        if(res.meta.status!==200){
            return this.$message.error('删除用户失败！')
        }
        this.$message.success('删除用户成功')
        this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userinfo){
            this.userinfo=userinfo

            // 在展示对话框之前，获取所有角色列表

            const {data:res} = await this.$http.get('roles')
            if(res.meta.status!==200){
                return this.$message.error('获取角色列表失败')
            }

            this.rolesList = res.data
            this.setRoleDialogVisible = true
        },
        // 点击按钮分配角色
        async saveRoleInfo(){
            if(!this.selectedRoleId){
                return this.$message.error('请选择要分配的角色！')
            }

            const {data:res} = await this.$http.put(`users/${this.userinfo.id}/role`,{rid:this.selectedRoleId
            })

            if(res.meta.status!==200){
                return this.$message.error('更新角色失败！')
            }

            this.$message.success('更新角色成功！')
            this.getUserList()
            this.setRoleDialogVisible=false
        },
        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
            this.selectedRoleId='',
            this.userinfo={}
        }

    }
}
</script>

<style lang="less" scoped>

</style>